CN204102681U - Integrated Transformer - Google Patents

Abstract

The application relates to an integrated transformer, which comprises a plurality of magnetic core groups and a first-stage winding. The plurality of magnetic core groups at least comprise a first magnetic core group and a second magnetic core group, wherein each magnetic core group comprises a winding space. The first-stage winding comprises a first wire outlet end, a second wire outlet end, at least one connecting section and a plurality of winding sections. The plurality of winding sections are correspondingly wound in the winding spaces of the plurality of magnetic core groups in sequence, and any two adjacent winding sections are connected through the connecting section. The first wire outlet end and the second wire outlet end respectively extend from the first winding section wound on the first magnetic core group and the last winding section wound on the second magnetic core group.

Description

Integrated Transformer

technical field

The present application relates to a transformer, especially an integrated transformer that can save installation space and reduce loss.

Background technique

In recent years, transformers have been widely used in various electronic products. Due to social and environmental changes, electronic products are gradually developing towards environmental protection and energy saving. Therefore, in order to achieve the goal of energy saving and carbon reduction, how to improve the efficiency of transformers is really a important current issues.

Figure 1 is a schematic diagram of an existing transformer. As shown in FIG. 1 , the transformer 1 includes a magnetic core set 10 and a winding 11 . The magnetic core set 10 has a winding space 100 , the winding 11 has a first lead end 111 and a second lead end 112 , and the first lead end 111 and the second lead end 112 have a bare wire end B respectively. In the existing method, two transformers 1 are fixed on the circuit board 2, and the bare wire end B of the first outlet 111 and the bare wire end B of the second outlet 112 are soldered to the corresponding connection points on the circuit board 2 respectively. , so that the windings 11 of the two transformers 1 are connected in series. However, the way of connecting the two transformers through the circuit board 2 will cause excessive energy loss.

In addition, in order to comply with safety standards, the bare wire end B welded to the first outlet end 111 of the circuit board 2 and the bare wire end B welded to the second outlet end 112 of the circuit board 2 are connected to the second-level winding and There must be a specific distance between the magnetic core set 10 and the secondary components of the circuit board 2 , for example, more than 8 mm, so as to meet the distance required by safety regulations. In this case, the space utilization of the circuit board 2 will be poor. In other words, the connection method of connecting the two transformers through the circuit board 2 will limit the space configuration and make it difficult to achieve a miniaturized design.

In view of this, how to develop an integrated transformer to solve the defects of the prior art is an urgent problem to be solved by those in the relevant technical fields.

Utility model content

The purpose of the present application is to provide an integrated transformer, which solves the problems of excessive energy loss and the difficulty of thinning the design through a completely disconnected winding structure.

Another object of the present application is to provide an integrated transformer, which can reduce energy loss through a completely continuous winding structure, and adjacent transformers can be stacked and closely arranged on different sides to achieve diversification and thinness customized setting method.

According to the idea of the present application, a broad embodiment of the present application is to provide an integrated transformer, which includes a plurality of magnetic core groups and first-level windings. The plurality of magnetic core groups at least include a first magnetic core group and a second magnetic core group, wherein each magnetic core group includes a winding space. The first-level winding wire includes a first wire outlet, a second wire outlet, at least one connecting segment and a plurality of winding segments. The plurality of wraps includes a first wrap and a last wrap. A plurality of winding sections are sequentially and correspondingly wound in the winding spaces of the plurality of magnetic core groups, and any two adjacent winding sections are connected through a connecting section. The first wire-out end and the second wire-out end respectively extend out from the first winding section wound on the first magnetic core set and the last winding section of the second magnetic core set.

According to an embodiment of the present application, the integrated transformer further includes a plurality of second-level windings, the plurality of second-level windings are respectively arranged in the winding spaces of the plurality of magnetic core groups, and the plurality of second-level windings The secondary windings are set in parallel.

According to another embodiment of the present application, each of the second-level windings includes a plurality of flat coils, and the plurality of flat coils are separately arranged in the winding space of each of the magnetic core groups.

According to another embodiment of the present application, each of the flat coils includes a wire management structure, and the first-level winding wires are managed through the wire management structure.

According to another embodiment of the present application, the integrated transformer further includes a plurality of bushings, respectively sleeved on the first outlet end, the second outlet end and the connection section of the first-level winding.

According to another embodiment of the present application, the first wire outlet and the second wire outlet respectively include a bare wire end.

According to another embodiment of the present application, each of the magnetic core groups is composed of a pair of E-shaped magnetic cores, and the E-shaped magnetic cores include a base and a pair of side walls, wherein the pair of side walls are respectively connected to two opposite sides of the base.

According to another embodiment of the present application, the integrated transformer further includes a group of connection elements connected to the adjacent magnetic core groups.

According to another embodiment of the present application, the bases of adjacent magnetic core groups are attached to each other.

According to another embodiment of the present application, the side walls of the adjacent magnetic core groups are attached to each other.

Description of drawings

Figure 1 is a schematic diagram of an existing transformer.

FIG. 2 is a schematic diagram of an integrated transformer in a preferred embodiment of the present application.

FIG. 3 is a schematic diagram of an integrated transformer in another preferred embodiment of the present application.

FIG. 4 is a schematic diagram of an integrated transformer in another preferred embodiment of the present application.

【Symbol Description】

1: Transformer

10: Magnetic core set

100, 310: winding space

11: Winding

111, 321: the first outlet

112, 322: the second outlet terminal

2: circuit board

3: Integrated Transformer

31: Core set

31a: First core set

31b: Second core set

31c: The third core group

31d: Fourth magnetic core group

32: First level winding

323: Connection segment

324: winding section

3241: The first winding section

3242: The last winding section

33: Secondary winding

330: flat coil

330a: Wire management structure

34: Casing

B, B1: Bare wire end

C1: Pedestal

C2: side wall

F: Assembling components

Detailed ways

Some typical embodiments embodying the features and advantages of the present application will be described in detail in the description in the following paragraphs. It should be understood that the present application can have various changes in different ways without departing from the scope of the present application, and the description and drawings therein are used for illustration in nature rather than limiting the present application.

Please refer to Fig. 2, Fig. 3 and Fig. 4, Fig. 2 is the schematic diagram of the integrated transformer of the preferred embodiment of the present application; Fig. 3 is the schematic diagram of the integrated transformer of another preferred embodiment of the present application; and Fig. 4 is the schematic diagram of the integrated transformer of the present application A schematic diagram of an integrated transformer in a preferred embodiment. As shown in FIG. 2 , FIG. 3 and FIG. 4 , the integrated transformer 3 includes a plurality of magnetic core groups 31 , a first-level winding 32 and a plurality of second-level windings 33 . The multiple magnetic core groups 31 are composed of n independent magnetic core groups 31 , wherein n is a positive integer greater than or equal to 2 such as 2, 3, 4 . . . . When n is equal to 2, the plurality of magnetic core groups 31 includes a first magnetic core group 31a and a second magnetic core group 31b. When n is equal to 3, the plurality of magnetic core groups 31 includes a first magnetic core group 31a, a second magnetic core group 31b and a third magnetic core group 31c. By analogy, the plurality of magnetic core groups 31 may also include a fourth magnetic core group 31d, even a fifth magnetic core group, a sixth magnetic core group, etc., but not limited thereto. That is, the plurality of magnetic core groups 31 at least include a first magnetic core group 31a and a second magnetic core group 31b, and each magnetic core group 31 includes a winding space 310 for winding the first-level winding 32 .

Please refer to FIG. 2 , FIG. 3 and FIG. 4 , the first-level winding wire 32 includes a first outlet end 321 , a second outlet end 322 , at least one connection section 323 and a plurality of winding sections 324 . The plurality of winding sections 324 at least include a first winding section 3241 and a last winding section 3242, and the plurality of winding sections 324 are sequentially wound in the winding spaces 310 of the plurality of magnetic core groups 31, that is, each The winding space 310 of the magnetic core group 31 corresponds to accommodate a winding section 324, wherein the first winding section 3241 is the most upstream winding section of the first-level winding 32, and the last winding section 3242 is the first winding section 3242. The most downstream winding section of the primary winding 32 is provided. Next, any two adjacent winding sections 324 are connected through the connecting section 323, that is, a first-level winding 32 is used to continuously wind the winding space 310 of the plurality of magnetic core groups 31 without a wire, so as to reduce energy loss. Then, the first outlet end 321 of the first level winding 32 is extended from the first winding segment 3241 wound on the first magnetic core group 31a, and the second outlet end 322 of the first level winding 32 is wound The last winding section 3242 disposed on the second magnetic core group 31b extends out. In this embodiment, when the number of magnetic core groups is n (n≧2), the number of connection segments included in the first-level winding 32 is n-1, and the first-level winding 32 The number of winding segments 324 included is n.

Then, as shown in FIG. 2 , FIG. 3 and FIG. 4 , a plurality of second-level windings 33 are respectively arranged in the winding spaces 310 of a plurality of magnetic core groups 31, and a plurality of second-level windings 33 are arranged in parallel, that is, each The winding spaces 310 are correspondingly accommodated with a second-level winding 33 , and the input power provided by the first-level winding 32 is converted into a plurality of output powers through the plurality of second-level windings 33 . In this embodiment, each second-level winding 33 includes a plurality of flat coils 330, and the plurality of flat coils 330 are separately arranged in the winding space 310 of each magnetic core group 31, wherein each winding space The number of flat coils 330 included in 310 can be adjusted to 2, 3, 4 or 5 according to actual applications, but not limited thereto. In some embodiments, each second-level winding 33 may also include a single flat coil 330 , or connect multiple flat coils 330 in series to form the same loop. In a preferred embodiment, each flat coil 330 includes one or a pair of wire management structures 330a, extending from the edge of the flat coil 330 and protruding from the winding space 310, and the first-level winding 32 passes through the wire management structures 330a Arrange the wires so that the first outlet 321 , the second outlet 322 , the connection section 323 and the winding section 324 of the first-level winding 32 are separated from each other to avoid short circuit or abrasion.

In this embodiment, as shown in FIG. 2 , FIG. 3 and FIG. 4 , a plurality of sleeves 34 are respectively sleeved on the first outlet end 321 , the second outlet end 322 and the connecting section 323 of the first-level winding 32 , Moreover, the sleeve 34 is made of insulating material and has good ductility, so as to enhance the insulating effect and comply with safety regulations. In some embodiments, the first outlet end 321 and the second outlet end 322 of the first level winding 32 respectively include a bare wire end B1, so as to pass through the bare wire end B1 and the second outlet end 322 of the first wire end 321 and the second outlet end 322 A power supply circuit (not shown) is connected.

Please refer to Fig. 2, Fig. 3 and Fig. 4 again, each magnetic core group 31 is made up of a pair of E-shaped magnetic cores (or PQ-shaped magnetic cores commonly known in the industry), and each magnetic core includes base C1 and A pair of sidewalls C2, wherein the pair of sidewalls C2 are respectively connected to two opposite sides of the base C1. In this embodiment, the integrated transformer 3 includes a combining element F, and the combining element F is connected to adjacent magnetic core groups 31 . As shown in FIG. 2, in this embodiment, the first magnetic core group 31a is adjacent to the second magnetic core group 31b, so as to connect the first magnetic core group 31a and the second magnetic core group 31b through the assembly element F, and The sidewalls C2 of adjacent magnetic core groups 31 are attached to each other, so that the adjacent magnetic core groups 31 are fixed as a whole.

In some embodiments, as shown in FIG. 3, the first magnetic core group 31a is adjacent to the third magnetic core group 31c, and the third magnetic core group 31c is adjacent to the second magnetic core group 31b. Element F connects the first core group 31a to the third core group 31c, and the third core group 31c to the second core group 31b. In this case, the bases C1 of the adjacent magnetic core groups 31 are attached to each other, so that the adjacent magnetic core groups 31 are fixed as a whole.

In other embodiments, as shown in FIG. 4 , the first magnetic core group 31a is adjacent to the second magnetic core group 31b and the third magnetic core group 31c, and the second magnetic core group 31b is adjacent to the first magnetic core The group 31a, the fourth magnetic core group 31d, and the third magnetic core group 31c are adjacent to the first magnetic core group 31a and the fourth magnetic core group 31d, and respectively connect the elements F to make the first magnetic core group 31a, The second magnetic core group 31b, the third magnetic core group 31c and the fourth magnetic core group 31d are connected and fixed as one. In this case, the bases C1 of the first magnetic core group 31a and the second magnetic core group 31b are attached to each other, the side walls C2 of the first magnetic core group 31a and the third magnetic core group 31c are attached to each other, and the second magnetic core group 31a is attached to each other. The side walls C2 of the second magnetic core group 31b and the fourth magnetic core group 31d are attached to each other, and the bases C1 of the third magnetic core group 31c and the fourth magnetic core group 31d are attached to each other.

Please refer to FIG. 2 again and cooperate with FIG. 3 and FIG. 4 , through a first-level winding 31 completely wound around a plurality of magnetic core groups 31 , adjacent magnetic core groups 31 can be closely attached to each other, therefore, Adjacent transformers can be stacked on different surfaces and arranged closely to achieve multiple and thinner arrangements.

On the other hand, as shown in Fig. 2, Fig. 3 and Fig. 4, through the good insulation properties of the bushing 34, when the connecting section 323 of the first-level winding 32 is damaged, the conductive wire is exposed and the electric shock is caused. bad question.

To sum up, the composite transformer of the present application can reduce energy loss by setting it completely without wires, and adjacent transformers can be stacked and closely arranged on different surfaces to achieve multiple and thinner transformers. How to set it up.

The present application can be modified in various ways by those skilled in the art, without departing from the protection scope of the attached patent application.

Claims (10)

1. An integrated transformer, comprising: A plurality of magnetic core groups, including at least a first magnetic core group and a second magnetic core group, wherein each of the magnetic core groups includes a winding space; and A first-level winding, including a first outlet end, a second outlet end, at least one connection section and a plurality of winding sections, the plurality of winding sections are sequentially and correspondingly wound on the plurality of magnetic core groups The winding space, and any two adjacent winding sections are connected through the connecting section, the multiple winding sections include a first winding section and a last winding section, the first outlet end and The second wire outlet end is respectively extended from the first winding section wound on the first magnetic core set and the last winding section of the second magnetic core set. 2. The integrated transformer according to claim 1, further comprising a plurality of second-level windings, the plurality of second-level windings are respectively arranged in the winding spaces of the plurality of magnetic core groups, and the plurality of second-level windings The secondary windings are set in parallel. 3. The integrated transformer as claimed in claim 2, wherein each of the second-level windings comprises a plurality of flat coils, and the plurality of flat coils are separately arranged in the winding space of each of the magnetic core groups. 4. The integrated transformer as claimed in claim 3, wherein each of the flat coils comprises a wire management structure, and the first-stage winding wires are routed through the wire management structure. 5 . The integrated transformer as claimed in claim 1 , further comprising a plurality of sleeves respectively sleeved on the first outlet end, the second outlet end and the connecting section of the first-level winding. 6. The integrated transformer as claimed in claim 5, wherein the first outlet terminal and the second outlet terminal respectively comprise a bare wire terminal. 7. The integrated transformer as claimed in claim 1, wherein each of the magnetic core groups is composed of a pair of E-shaped magnetic cores, and the E-shaped magnetic cores include a base and a pair of side walls, wherein the pair of side walls The walls are respectively connected to two opposite sides of the base. 8. The integrated transformer as claimed in claim 7, further comprising a set of connecting elements connected to the adjacent magnetic core groups. 9. The integrated transformer as claimed in claim 8, wherein the bases of adjacent magnetic core groups are attached to each other. 10. The integrated transformer as claimed in claim 8, wherein the sidewalls of adjacent magnetic core groups are attached to each other.